Fastener



FIG. 1 is a perspective view of a fastener showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is another perspective view of FIG. 1 ;

FIG. 9 is another perspective view of FIG. 1 ;

FIG. 10 is another perspective view of FIG. 1 ; and,

FIG. 11 is another perspective view of FIG. 1 .

The broken lines in the drawings illustrate portions of the fastener and form no part of the claimed design. 

CLAIM The ornamental design for a fastener, as shown and described. 